GB2324828A

GB2324828A - Lockset

Info

Publication number: GB2324828A
Application number: GB9808537A
Authority: GB
Inventors: Steven Armstrong
Original assignee: Newfrey LLC
Current assignee: Newfrey LLC
Priority date: 1997-04-29
Filing date: 1998-04-23
Publication date: 1998-11-04
Anticipated expiration: 2018-04-23
Also published as: ES2154970A1; AU732639B2; US5797286A; GB9808537D0; CA2236059A1; CN1145734C; GB2324828B; ES2154970B1; MX9803083A; CN1197879A; TW418278B; KR19980081780A; KR100297034B1; AU6362498A

Abstract

A lockset has a bezel 14 surrounding the cylinder lock 20 which can be rotated when the door is unlocked to relock the door. The bezel and a support 36 have facing annular surfaces 35, (43 figure 4), the latter carrying projecting teeth (46). A cam element 28 has projection 60 engaged in notch 52 of the support surface 35 in the locked position, but riding on the surface in the unlocked position. When in the latter position, rotation of the bezel causes a tooth to engage projection 62, so rotating the cam back into the locked position.

Description

2324828 LOCKSET The present invention relates to a lockset and, more

particularly, to a lockset which includes an exterior lock which is key operable but which can be relocked from the exterior by rotating a rotatable bezel.

Conventional deadbolts are key operated from the outside, whether opening or locking the door. When it is dark outside the door, finding the key hole can be difficult. To obviate this problem, deadbolts have been designed to permit exterior locking without a key. U.S. Patents Nos. 5,150,592 and 5,010,749 disclose locks which operate in this manner.

blade, It is an object of the present invention to provide a simplified design which will permit relocking without a key.

The present invention provides a lockset comprising a keyed cylinder including an axially extending torque support bracket mountable on a door, cylindrical bezel, means for rotatably supporting said cylindrical bezel between the keyed cylinder and the support bracket, the support bracket including an annular surface facing the bezel having an axially extending notch therein located at a door locked location, the bezel including an annular surface facing the support bracket annular surface, a plurality of axially projecting teeth on said bezel annular surface, and a cam element including 1 a hole for receiving the torque blade so that the cam element can be slidably displaced along the torque blade and so that the cam element will rotate with the torque blade, a first tooth projecting axially towards the support bracket annular surface for riding on the support bracket annular surface when the door is unlocked and selectively configured for insertion into the axially extending notch when the door is locked and a second tooth projecting axially towards the bezel annular surface and selectively configured to engage one of the bezel teeth in the event that the bezel is rotated while the second tooth is riding on the annular surface, the second tooth and the bezel teeth being axially spaced when the first tooth is at the door locked position, a spring for biasing the cam element towards the support bracket, the hole being selectively configured so that the cam element can selectively move so that the first tooth can either enter the notch or ride on the annular surface of said support bracket, whereby the bezel can be rotated when the door is unlocked so that one of the bezel teeth will engage the cam second tooth which will be located on the support bracket annular surface to thereby rotatively drive the cam element until the first tooth is forced into the notch by the spring.

An embodiment of a lockset will now be described with reference to the accompanying drawings, in which:

Figure 1 is an oblique front view of a deadbolt; Figure 2 is an oblique exploded view of a portion of the deadbolt illustrated in Figure 1; Figure 3 is a front view of the deadbolt portion shown in Figure 1 with the deadbolt cylinder and bezel portions removed; 2 Figure 4 is an oblique separated view showing a portion of the deadbolt shown in Figure 2 from the other end; and Figure 5 is a side elevational view of the cam element when the door is in the unlocked position.

The deadbolt includes a decorative shroud 10 which has an annular outwardly projecting lip 12, a conical rotatable bezel 14 which may have outwardly extending grips 16 and a cylinder portion 18 which holds the bezel on the shroud.

The cylinder portion 18, which is received by a housing 20 (Figure 2), receives a I'D" shaped torque blade 22 (Figure 3) which passes through a circular hole 24 in a compression spring 26, through a I'D" shaped hole 27 in a cam element 28, through a circular hole 30 in a cover 32 and freely through a large opening 34 in a support bracket 36. The support bracket includes upper and lower shield portions 37. A screw 38 which passes through a suitable opening 40 in the cover and into a suitable hole (not shown) in the housing traps the cam element between the cover and the end of the cylinder with a limited degree of axial movement. For further details of a conventional deadbolt cylinder reference should be made to U.S. Patent No. 5,317,889.

The end of the bezel adjacent the door has an outer annular surface 42 which is located between the annular lip 12 of the decorative shroud and a raised annular lip 44 on the support plate 36 and engages the support plate and an inner annular surface 43 which is slightly recessed. Located on this inner annular surface and within the support plate raised annular lip 44 are four 900 spaced bezel teeth 46 (at 00, 900, 1801 and 2700) which extend toward the door. Defined on the annular portion 50 of the surface of the supporting plate within the annular lip 44 and axially adjacent the inner annular surface are located a pair of radial notches 52 (Figure 3) which are located about 300 on 3 either side of the 1800 location. one of these notches is for left hand operation and the other is for right hand operation. The cam element 28, which rotates with the torque blade 22, has a head portion 54 which is received within the open end of the housing 22 and an arm portion 56 which extends outwardly through a slot 58 defined in the end of the housing. The arm terminates in a first tooth 60 which projects axially toward the annular portion 50 on the support plate and which is shaped to be received by either of the radial notches 52 and in a second tooth 62 which projects axially toward the inner annular portion 43 on the bezel and which is shaped to be engaged and rotatively displaced by any of the bezel teeth 46 when the bezel is rotated. When the deadbolt is locked either by operating is the key in the front lock or by either doing the same thing on the interior lock or operating an interior turn lever, the cam element will be rotated with the torque blade whereby the first cam tooth will be retracted from the support plate notch that it is in when the door is locked and rides along the flat surface of the support plate until it becomes located at the 6:00 position illustrated in Figure 3 (the cam is forcefully displaced axially along the torque rod). 'As shown in Figure 5, such movement is carried out by the cam element pivoting slightly when the first tooth rides on the surface of the support bracket. In the event any of the four bezel teeth are in the path of the second cam tooth 62 as the cam rotates to this position the bezel will be rotated with the cam element. The door can be relocked in a traditional manner by operating either the key or the turn lever. Additionally the door can be relocked from the outside by rotating the bezel in the direction that will return the cam to its initial position (the bezel will only rotate in one direction). When the bezel is rotated, one of the bezel teeth will engage the second cam tooth and rotatively drive the cam back to its start position where 4 the force of the compression spring 26 will force the first tooth of the cam into the notch on the support plate that defines the initial cam position (door locked). At this location the second cam tooth and the bezel teeth become axially separated so that rotation of the bezel has no function is

Claims

1 A lockset comprising a keyed cylinder (18) including an axially extending 5 torque blade (22), support bracket (36) mountable on a door, cylindrical bezel (14), means for rotatably supporting the cylindrical bezel between the keyed cylinder (18) and the support bracket (14) (36), the support bracket (36) including an annular surface (44) facing the bezel (14) having an axially extending notch (52) therein located at a door locked location, the bezel (14) including an annular surface (42) facing the support bracket annular surface (44), plurality of axially projecting teeth (46) on said bezel annular surface (44), and cam element (28) including hole (27) for receiving the torque blade (22) so that the cam element (28) can be slidably displaced along the torque blade (22) and so that the cam element (28) will rotate with the torque blade (22), a first tooth (60) projecting axially towards the support bracket annular surface (44) for riding on the support bracket annular surface (44) when the door is unlocked and selectively configured for insertion into the axially extending notch (52) when the door is locked and a second tooth (62) projecting axially towards the bezel annular surface (42) and selectively configured to engage one of the bezel teeth (46) in the event that the bezel (14) is rotated while the second tooth (62) is riding on the annular surface (42), the second tooth (62) and the bezel teeth (46) being axially spaced when the first tooth (60) is at the door locked position, 6 a spring (26) for biasing the cam element (28) towards the support bracket (36), the hole (27) being selectively configured so that the cam element (28) can selectively move so that the first tooth (60) can either enter the notch (52) or ride on the annular surface (44) of said support bracket (36),whereby the bezel (14) can be rotated when the door is unlocked so that one of the bezel teeth (46) will engage the cam second tooth (62) which will be located on the support bracket annular surface (44) to thereby rotatively drive the cam element (28) until the first tooth (60) is forced into the notch (52) by the spring (26).

2 A lockset according to claim 1, characterised in that the support bracket (36) includes a second axially extending notch (52) therein located at a second door locked location.

3 A lockset substantially as herein described and with reference to the accompanying drawings.

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